Cpl. Paul Krehbiel (right), the chemical, biological, radioactive and nuclear chief with 3rd Radio Battalion, helps a Marine clear CS gas from his gas mask during annual gas chamber training at Boondocker Training Area, March 25, 2014. ( Marine Corps photo by Lance Cpl. Matthew Bragg) Getting Gassed 140325-M-DP650-004

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Photo credit: © PJF Military Collection / Alamy / Afripics
License: Licensed
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